Product Client interface

ProductClient.java

@RequestMapping("/api/product/")
public interface ProductClient {

    @RequestMapping(value = "/{id}", method = RequestMethod.GET)
    @ResponseBody
    public Product withId(@PathVariable("id") int id);

    @RequestMapping(method = RequestMethod.POST)
    public Product createProduct(@RequestBody Product product);

    @RequestMapping(method = RequestMethod.PUT)
    public Product updateProduct(@RequestBody Product product);

    @RequestMapping(value = "/{id}", method = RequestMethod.DELETE)
    public void deleteProduct(@PathVariable("id") int id);

    @RequestMapping(value = "/query", method = GET)
    @ResponseBody
    public ProductList queryProducts(
            @RequestParam(value = "beginPrice", required = true) float beginPrice,
            @RequestParam(value = "endPrice", required = true) float endPrice,
            @RequestParam(value = "minQuantity", required = false) Long quantity
    );
}